fix: update Alpine package handling to allow optional version pinning (#187)

Co-authored-by: ChristophShyper <45788587+ChristophShyper@users.noreply.github.com>

Author: github-actions[bot]

Taskfile.scripts.yml

@@ -190,26 +190,26 @@ tasks:
         fetch_index main "$index_main"
         fetch_index community "$index_community"
 
-        if ! grep -Eq '^[a-zA-Z0-9+_.-]+(=~|~=)[0-9]+\.[0-9]+$' alpine-packages.txt; then
-          echo "INFO: No pinned Alpine packages (~=X.Y) found in alpine-packages.txt"
-          exit 0
-        fi
-
         tmp_out=".tmp/alpine-packages.updated.txt"
         : > "$tmp_out"
         updated=0
+        processed=0
         while IFS= read -r line || [ -n "$line" ]; do
           if [ -z "$line" ] || printf '%s' "$line" | grep -Eq '^[[:space:]]*#'; then
             echo "$line" >> "$tmp_out"
             continue
           fi
-          if ! printf '%s' "$line" | grep -Eq '^[a-zA-Z0-9+_.-]+(=~|~=)[0-9]+\.[0-9]+$'; then
+          if ! printf '%s' "$line" | grep -Eq '^[a-zA-Z0-9+_.-]+((=~|~=)[0-9]+\.[0-9]+)?$'; then
             echo "$line" >> "$tmp_out"
             continue
           fi
 
-          pkg="$(printf '%s' "$line" | sed -E 's/^([a-zA-Z0-9+_.-]+)(=~|~=).*/\1/')"
-          current_minor="$(printf '%s' "$line" | sed -E 's/^[a-zA-Z0-9+_.-]+(=~|~=)([0-9]+\.[0-9]+).*$/\2/')"
+          pkg="$(printf '%s' "$line" | sed -E 's/^([a-zA-Z0-9+_.-]+).*/\1/')"
+          current_minor=""
+          if printf '%s' "$line" | grep -Eq '^[a-zA-Z0-9+_.-]+(=~|~=)[0-9]+\.[0-9]+$'; then
+            current_minor="$(printf '%s' "$line" | sed -E 's/^[a-zA-Z0-9+_.-]+(=~|~=)([0-9]+\.[0-9]+).*$/\2/')"
+          fi
+
           latest_full="$(lookup_latest "$pkg" || true)"
           if [ -z "$latest_full" ]; then
             echo "WARN: Could not resolve latest version for $pkg; keeping $line"
@@ -218,6 +218,15 @@ tasks:
           fi
 
           latest_minor="$(normalize_minor "$latest_full")"
+          processed=1
+
+          if [ -z "$current_minor" ]; then
+            echo "PIN: $pkg -> $latest_minor"
+            echo "$pkg~=$latest_minor" >> "$tmp_out"
+            updated=1
+            continue
+          fi
+
           if [ "$latest_minor" = "$current_minor" ]; then
             echo "OK: $pkg already up to date at $current_minor"
             echo "$pkg~=$current_minor" >> "$tmp_out"
@@ -228,6 +237,10 @@ tasks:
           updated=1
         done < alpine-packages.txt
 
+        if [ "$processed" -eq 0 ]; then
+          echo "INFO: No Alpine package entries found in alpine-packages.txt"
+        fi
+
         if ! cmp -s alpine-packages.txt "$tmp_out"; then
           mv "$tmp_out" alpine-packages.txt
         else